# A006183 (b-file synthesized from sequence entry)
1 1
2 2
3 6
4 22
5 98
6 522
7 3262
8 23486
9 191802
10 1753618
11 17755382
12 197282022
13 2387112466
14 31249472282
15 440096734638
16 6635304614542
17 106638824162282
18 1819969265702946
19 32873194861759462
20 626524419718239158
21 12565295306571352002
22 264532532769923200042